Device for attaching shoe soles to the uppers



Oct. 23, 1928.

F. SAHR DEVICE FOR ATTAGHING SHOE SOLES TO THE UPPERS 3 Sheets-Sheet 1 Filed Dec. 26, 1923 Oct. 23, 1928.

F. SAHR DEVICE FOR ATTACHING SHOE SOLES TO THE UPPERS Filed Dec. 26, 1925 3 Sheets-Sheet 2 iii!@255:

Get. 23, 1928.

F. SAHR DEVICE FOR ATTACHING SHOE SOLES TO THE UPPERS Filed Dec. 26, 1925 I s Sheets-Sheet a V mentoz flan]? Safer 7 A w H Patented Get. 23, 19218.

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FRANK SAHB, oFooLU'MBus', .OHIO.

DEVICE FGB ATTACHING SHOE SOLES TO THE UPPERS.

Application filedDecember 26, 1923. Serial No. 6852 6 01. i

The present invention is directed'to improvements in devices for attaching shoe soles to the uppers.

The primary object of the invention is to provide a novel device for securing the soles to the uppers without the use of nails, thereby eliminating any unevenness upon the upper surface of the inn-er sole as is new characteristic in shoes using nails as means for securing the sole to the uppers. By eliminating he use of nails as securing means the upper surface of the sole will be smooth and a shoe made in accordance with my invention can be worn wit-h comfort.

With these. and other objects in view, as will appear as the description proceeds, the invention consists in the novel features of construction, combinations of elements and' arrangements of parts, hereinafter to be'fully described and pointed out in the appended claims. I

In the accompanying drawing:

Figure 1 is a. rear elevation of the device,

Figure 2 's a side elevation thereof,

Figure 8 is a detail vertical sectional view through the wire twisting mechanism,

Figure l is a fragmentary bottom plan view of the upper showing the same upon the last and the wire in place,

Figure is a detail view partly in section of one of the stretcher bars and mounting,

Figure 6 is a sectional view on line (36 of Figure 2, and

Figure 'l' is a detail sectional view through one at the stretcher bars showing the same in its operative position.

Referring to the drawing 1 designates a standard which may be secured in any suitable manner to a support, such for instance as a work bench, and connected with this stand ard for vertical adjustment is the sect-ion 2 of a clamping member 3, the section 4 of said member being adjustably connected with the section 2 through the. medium of the clamping bolt 5. The section t has a split vertical bearing 6 formed therein, in which is engaged the interiorly threaded tubular spindle 7 of the head 8. This head has a hollow extension 9 rising therefrom, which extension is provided with an offset last engaging plate 10 and upon which 1s engaged the heel of the last 11. The head 8 has a curved arm 12 cast integral therewith, there being a clamping screw 13 carried by'said arm for impingement against. the last tohold the same in clamped engagement with the plate 10, as clearly shown in Figure 2 of the drawin x b The upper 14 is has itsmargin 15 providedwvith a plurality of tabs 16. It is preferable that these tabs be formed with spaced openings 16 before the upper is placed upon the. last and it is through these openings that the pliable wire strand 17 is threaded, it being of course understood that previousto adjustingthe margin 15 that the sole 18 is placed upon the last, said sole being slit to provide a circumscribing groove 19 and resultant flaps 20 and 21, the latter being adapted to rest against the last so that the inturned margin 15 may be received in the groove 19. After the margin 15 has been properly placed in the groove 19 it is necessary to draw the wire 17 taut to hold the marginal tabs 16 firmly in place and in order to accomplish this the free ends of the Wire are bent into engagement with a hook 23 carried by the upper end of the rod 25%, whereby when the rod 2% is moved downwardly the proper tension will be placed upon said wire. This rod is disposed axially within the feed screw 25 which is threaded in the spindle 7, said spindle being engaged upon the flange 26 of said rod so that when the screw 25 is fed downwardly corresponding movement will be imparted to the rod 24: to cause the wire, which is in loop form, to contract, thereby drawing the tabs into the groove 19. After the proper tension has been placed upon the wire upon moving the feed screw 25 downwardly through the medium of the hand wheel 27 the rod 241 rotated to twist the terminals 22 of the wire into tight engagement, after which the wire is cut at a point adjacent the hook 23, thereby leaving the wire in place and the sole tightly connected with the upper.

A rectangular frame 28 is employed and has its lowerbar 29 adjustably connected with the head 8, the side bars 30 and top bar 31 of said frame being relatively adjustable through the medium of the corner clamps 32 which may be of any well known construction. Adjustably mounted on the side bars 30 are arms 33, saidarms having bifurcated ends 34, there being. a similar arm 35 adjustably mounted upon the bar 3 Cooperating with the bifurcation of these bars are placed upon the last and the stretcher bars 36, each stretcher bar having a series of teeth 37 formed therein and adapted to engage the teeth 38 of said arms. Uponreference to Figures 2 and 7 it Will be observed that these stretcher bars 36 may be engaged with the Wire 17and' the W'i're manipulated previous to the final twisting operto. the sole 18.

the soles are comparatively thin and in such "ation, said bars having seats 39 upon their tapered-ends 40 to engage said Wire. Y

After the sole 18 has been properly attached tothe upper 142 the heel section there of Will be secured to the upper in the usual cases it'is-not necessary to apply other layers. While I have preferably used wire for securing the tabs of the margin 15 in place,

any other pliable material may be used if de' sired.

What is claimed is:

A lasting apparatus comprising a last clamp adapted for the reception of a last upon Whichisreceivable a shoe upper and sole, a bearing provided in connection With said clamp, an adjustable rod mounted for longitudinal movement in said bearing and having its upper end provided with a hook shaped projection adapted for the reception of a flexible securing member employed in binding the shoe upper to the sole, threaded means carried by said clamp for controlling the longitudinal positions of said rod,and

means operating independently of said threaded means for permitting of the rotation of said rod about its longitudinal axis.

In testimony whereof I aiiix my signature.

FRANK SA HR. 

